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/*******************************************************************************
* Copyright (c) 2006, 2017 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* David Knibb initial implementation
* Matthew Webster Eclipse 3.2 changes
* Heiko Seeberger Enhancements for service dynamics
* Martin Lippert extracted weaving and caching service factories
*******************************************************************************/
package org.eclipse.equinox.weaving.adaptors;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.eclipse.equinox.service.weaving.ICachingService;
import org.eclipse.equinox.service.weaving.ICachingServiceFactory;
import org.eclipse.equinox.service.weaving.ISupplementerRegistry;
import org.eclipse.equinox.service.weaving.IWeavingService;
import org.eclipse.equinox.service.weaving.IWeavingServiceFactory;
import org.eclipse.osgi.internal.loader.ModuleClassLoader;
import org.eclipse.osgi.storage.BundleInfo.Generation;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceReference;
import org.osgi.service.packageadmin.PackageAdmin;
import org.osgi.service.startlevel.StartLevel;
import org.osgi.util.tracker.ServiceTracker;
public class WeavingAdaptorFactory {
private static final Collection<String> IGNORE_WEAVING_SERVICE_BUNDLES = Arrays
.asList(new String[] { "org.eclipse.equinox.weaving.aspectj", //$NON-NLS-1$
"org.eclipse.equinox.weaving.caching", //$NON-NLS-1$
"org.eclipse.equinox.weaving.caching.j9", //$NON-NLS-1$
"org.eclipse.equinox.simpleconfigurator", //$NON-NLS-1$
"org.eclipse.equinox.common" }); //$NON-NLS-1$
private ServiceTracker<ICachingServiceFactory, ICachingServiceFactory> cachingServiceFactoryTracker;
private PackageAdmin packageAdminService;
private StartLevel startLevelService;
private ISupplementerRegistry supplementerRegistry;
private ServiceTracker<IWeavingServiceFactory, IWeavingServiceFactory> weavingServiceFactoryTracker;
private ServiceListener weavingServiceListener;
private final Map<Bundle, IWeavingService> weavingServices = new ConcurrentHashMap<Bundle, IWeavingService>();
public WeavingAdaptorFactory() {
}
public void dispose(final BundleContext context) {
context.removeServiceListener(weavingServiceListener);
if (Debug.DEBUG_WEAVE)
Debug.println("> Removed service listener for weaving service."); //$NON-NLS-1$
weavingServiceFactoryTracker.close();
if (Debug.DEBUG_WEAVE)
Debug.println("> Closed service tracker for weaving service."); //$NON-NLS-1$
cachingServiceFactoryTracker.close();
if (Debug.DEBUG_CACHE)
Debug.println("> Closed service tracker for caching service."); //$NON-NLS-1$
}
protected ICachingService getCachingService(final ModuleClassLoader loader,
final Bundle bundle, final IWeavingService weavingService) {
if (Debug.DEBUG_CACHE)
Debug.println("> WeavingAdaptorFactory.getCachingService() bundle=" //$NON-NLS-1$
+ bundle + ", weavingService=" + weavingService); //$NON-NLS-1$
ICachingService service = null;
String key = ""; //$NON-NLS-1$
if (weavingService != null) {
key = weavingService.getKey();
}
final ICachingServiceFactory cachingServiceFactory = cachingServiceFactoryTracker
.getService();
if (cachingServiceFactory != null) {
service = cachingServiceFactory.createCachingService(loader, bundle,
key);
}
if (Debug.DEBUG_CACHE)
Debug.println("< WeavingAdaptorFactory.getCachingService() service=" //$NON-NLS-1$
+ service + ", key='" + key + "'"); //$NON-NLS-1$ //$NON-NLS-2$
return service;
}
public Bundle getHost(final Bundle fragment) {
if (Debug.DEBUG_GENERAL) Debug.println(
"> WeavingAdaptorFactory.getHost() fragment=" + fragment); //$NON-NLS-1$
Bundle host = null;
if (packageAdminService != null)
host = packageAdminService.getHosts(fragment)[0];
if (Debug.DEBUG_GENERAL)
Debug.println("< WeavingAdaptorFactory.getHost() " + host); //$NON-NLS-1$
return host;
}
protected IWeavingService getWeavingService(
final ModuleClassLoader loader) {
if (Debug.DEBUG_WEAVE) Debug.println(
"> WeavingAdaptorFactory.getWeavingService() baseClassLoader=" //$NON-NLS-1$
+ loader);
final Generation generation = loader.getClasspathManager()
.getGeneration();
final Bundle bundle = loader.getBundle();
IWeavingService weavingService = null;
if (!IGNORE_WEAVING_SERVICE_BUNDLES
.contains(bundle.getSymbolicName())) {
final IWeavingServiceFactory weavingServiceFactory = weavingServiceFactoryTracker
.getService();
if (weavingServiceFactory != null) {
weavingService = weavingServiceFactory.createWeavingService(
loader, bundle, generation.getRevision(),
supplementerRegistry);
if (weavingService != null) {
weavingServices.put(bundle, weavingService);
}
}
}
if (Debug.DEBUG_WEAVE)
Debug.println("< WeavingAdaptorFactory.getWeavingService() service=" //$NON-NLS-1$
+ weavingService);
return weavingService;
}
public void initialize(final BundleContext context,
final ISupplementerRegistry supplementerRegistry) {
if (Debug.DEBUG_GENERAL)
Debug.println("> WeavingAdaptorFactory.initialize() context=" //$NON-NLS-1$
+ context);
this.supplementerRegistry = supplementerRegistry;
initializePackageAdminService(context);
initializeStartLevelService(context);
// Service tracker for weaving service
weavingServiceFactoryTracker = new ServiceTracker<IWeavingServiceFactory, IWeavingServiceFactory>(
context, IWeavingServiceFactory.class, null);
weavingServiceFactoryTracker.open();
if (Debug.DEBUG_WEAVE)
Debug.println("> Opened service tracker for weaving service."); //$NON-NLS-1$
// Service listener for weaving service
weavingServiceListener = new ServiceListener() {
@Override
public void serviceChanged(final ServiceEvent event) {
if (event.getType() == ServiceEvent.REGISTERED) {
final List<Bundle> bundlesToRefresh = new ArrayList<Bundle>();
synchronized (weavingServices) {
final Iterator<Bundle> bundleEntries = weavingServices
.keySet().iterator();
while (bundleEntries.hasNext()) {
final Bundle bundle = bundleEntries.next();
bundleEntries.remove();
bundlesToRefresh.add(bundle);
if (Debug.DEBUG_WEAVE)
Debug.println("> Updated bundle " //$NON-NLS-1$
+ bundle.getSymbolicName());
}
}
if (bundlesToRefresh.size() > 0) {
supplementerRegistry.refreshBundles(bundlesToRefresh
.toArray(new Bundle[bundlesToRefresh.size()]));
}
}
if (event.getType() == ServiceEvent.UNREGISTERING
&& startLevelService != null
&& startLevelService.getStartLevel() > 0) {
final List<Bundle> bundlesToRefresh = new ArrayList<Bundle>();
synchronized (weavingServices) {
final Iterator<Bundle> bundleEntries = weavingServices
.keySet().iterator();
while (bundleEntries.hasNext()) {
final Bundle bundle = bundleEntries.next();
bundleEntries.remove();
bundlesToRefresh.add(bundle);
if (Debug.DEBUG_WEAVE)
Debug.println("> Updated bundle " //$NON-NLS-1$
+ bundle.getSymbolicName());
}
}
if (bundlesToRefresh.size() > 0) {
supplementerRegistry.refreshBundles(bundlesToRefresh
.toArray(new Bundle[bundlesToRefresh.size()]));
}
}
}
};
// if (System.getProperty(WEAVING_SERVICE_DYNAMICS_PROPERTY, "false")
// .equals("true")) {
try {
context.addServiceListener(weavingServiceListener, "(" //$NON-NLS-1$
+ Constants.OBJECTCLASS + "=" //$NON-NLS-1$
+ IWeavingServiceFactory.class.getName() + ")"); //$NON-NLS-1$
} catch (final InvalidSyntaxException e) { // This is correct!
}
// Service tracker for caching service
cachingServiceFactoryTracker = new ServiceTracker<ICachingServiceFactory, ICachingServiceFactory>(
context, ICachingServiceFactory.class, null);
cachingServiceFactoryTracker.open();
if (Debug.DEBUG_CACHE)
Debug.println("> Opened service tracker for caching service."); //$NON-NLS-1$
}
private void initializePackageAdminService(final BundleContext context) {
if (Debug.DEBUG_GENERAL) Debug.println(
"> AdaptorFactory.initializePackageAdminService() context=" //$NON-NLS-1$
+ context);
final ServiceReference<PackageAdmin> ref = context
.getServiceReference(PackageAdmin.class);
if (ref != null) {
packageAdminService = context.getService(ref);
}
if (Debug.DEBUG_GENERAL)
Debug.println("< AdaptorFactory.initializePackageAdminService() " //$NON-NLS-1$
+ packageAdminService);
}
private void initializeStartLevelService(final BundleContext context) {
if (Debug.DEBUG_GENERAL) Debug.println(
"> AdaptorFactory.initializeStartLevelService() context=" //$NON-NLS-1$
+ context);
final ServiceReference<StartLevel> ref = context
.getServiceReference(StartLevel.class);
if (ref != null) {
startLevelService = context.getService(ref);
}
if (Debug.DEBUG_GENERAL)
Debug.println("< AdaptorFactory.initializeStartLevelService() " //$NON-NLS-1$
+ startLevelService);
}
}
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